Nunez-Briones, A. G.; Benavides, R.; Martinez-Pardo, M. E.; Carrasco-Abrego, H.; Kotzian-Pereira-Benavides, C.; Espejo-Villalobos, D.; Garcia-Cerda, L. A. published the artcile< Effect of gamma dose rate in the crosslinking of PVC composites used for radiation protection in radiology>, HPLC of Formula: 3290-92-4, the main research area is PVC tantalum carbide composite crosslinking gamma irradiation radiation protection.
Flexible PVC composites loaded with various levels of tantalum carbide (TaC) were gamma irradiated at two different dose rates and their effect on crosslinking level, thermal stability and mech. properties evaluated. The shielding properties of composites against X-Rays at radiodiagnosis energies were also evaluated. Gel percentage results indicate a relatively stable crosslinking level after irradiation, only some reduction was observed for highly loaded composite treated at a low dose rate, although thermal stability observed by TGA was maintained. TaC particles were properly dispersed within the PVC material, as seen by SEM and toughness increased when both E’ and E” Moduli were enhanced after irradiation; even Tg, followed by Tanδ DMA curves, increased noticeably after treatment and for the higher TaC loaded composites, particularly when treated at low dose rate irradiation D. measurements indicated lighter and manageable materials with respect to traditional shielding items. The shielding properties for composites, evaluated in a clin. X-Ray apparatus, in the 50-129 kV interval, show mass attenuation coefficients close to the ones reported for lead, even higher for 50% TaC loaded composite and a very competitive half-value layer (HVL) for all of them.
Radiation Physics and Chemistry published new progress about Complex modulus, tan δ. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, HPLC of Formula: 3290-92-4.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics